Research Paper
2. Experimental Studies of CO2 Capturing from the Flue Gases

Ehsan Rahmandoost; Behrooz Roozbehani; Mohammad Hosein Maddahi

Volume 3, Issue 4 , Autumn 2014, Pages 1-15

http://dx.doi.org/10.22050/ijogst.2014.7483

Abstract
  CO2 emissions from combustion flue gases have turned into a major factor in global warming. Post-combustion carbon capture (PCC) from industrial utility flue gases by reactive absorption can substantially reduce the emissions of the greenhouse gas CO2. To test a new solvent (AIT600) for this purpose, ...  Read More

Research Paper
3. A Novel Method for Ultrasonic Evaluation of Horizontal Defects Using Time-of-Flight Diffraction

Parastoo Bagheri; Sina Sodagar; Gholamreza Rashed; Amin Yaghootian

Volume 3, Issue 4 , Autumn 2014, Pages 16-25

http://dx.doi.org/10.22050/ijogst.2014.7484

Abstract
  Time-of-flight diffraction method (ToFD) is an amplitude-independent sizing method which is based on the measurement of time-of-flight of defect tip diffracted waves. Although ToFD can measure through-wall length of defect accurately, this method is not capable of measuring horizontal defect size. In ...  Read More

Research Paper
4. Stability of Silica Nanoparticle Dispersion in Brine Solution: An Experimental Study

Jaber Esmaeeli Azadgoleh; Riyaz Kharrat; Nasim Barati; Ameneh Sobhani

Volume 3, Issue 4 , Autumn 2014, Pages 26-40

http://dx.doi.org/10.22050/ijogst.2014.7485

Abstract
  Nanotechnology has various applications in oil and gas industry such as enhanced oil recovery (EOR). The main challenge in using nanoparticles in EOR processes is their stability in harsh conditions such as high temperature, high pressure, and intermediate to high salinity. However, most of the recent ...  Read More

Research Paper
5. Investigating the Effect of Heterogeneity on Buckley-Leverett Flow Model

Maryam Ghorbani; Mohammad Reza Khorsand; Mohsen Masihi

Volume 3, Issue 4 , Autumn 2014, Pages 41-54

http://dx.doi.org/10.22050/ijogst.2014.7486

Abstract
  The performance of water flooding can be investigated by using either detail numerical modeling or simulation, or simply through the analytical Buckley-Leverett (BL) model. The Buckley-Leverett analytical technique can be applied to one-dimensional homogeneous systems. In this paper, the impact of heterogeneity ...  Read More

Research Paper
6. Single-phase Near-well Permeability Upscaling and Productivity Index Calculation Methods

Seyed Shamsollah Noorbakhsh; Mohammad Reza Rasaei; Ali Heydarian; Hamed Behnaman

Volume 3, Issue 4 , Autumn 2014, Pages 55-66

http://dx.doi.org/10.22050/ijogst.2014.7522

Abstract
  Reservoir models with many grid blocks suffer from long run time; it is hence important to deliberate a method to remedy this drawback. Usual upscaling methods are proved to fail to reproduce fine grid model behaviors in coarse grid models in well proximity. This is attributed to rapid pressure changes ...  Read More

Research Paper
7. An In-depth Study of Calcium Carbonate Scale Formation and Inhibition

Azizollah Khormali; Dmitry Gennadievich Petrakov; Georgy Yuryevich Shcherbakov

Volume 3, Issue 4 , Autumn 2014, Pages 67-77

http://dx.doi.org/10.22050/ijogst.2014.7523

Abstract
  A fundamental study of scale formation of calcium carbonate (CaCO3) for producing oil wells has been carried out. This article presents the study of the prediction of salt deposition in two different synthetic formation waters and investigates the effects of temperature and pressure on calcium carbonate ...  Read More